Through mathematical analysis,the principle of risk liability-gain was proved,when the expected risk gain exceeded the risk liability in the process of making decision,the decision maker had a preference to take risk,and when the expected risk liability to take on exceeds the risk gain, the decision maker tended to be risk-aversion.

Legislators should balance interests of both parties through just distributing risk liability of traffic accidents, based on rule of law and human rights, so as to fully realize social interests and to attain the goal of keeping traffic order.

Through a case of geotechnical investigation quality defects leading to increasing contractor cost,analyzed the quality liability and the risk liability of lump sum contract.

Venture transferring and liabilities ascertaining are always hinged upon the application of principal of delivering in international goods trade.

According to present situation of geological prospecting units, aiming at risk responsibility internal audit of geological prospecting units,the paper gives proposals for avoiding and lightening risk responsibility and improving audit quality.

Therefore,the tentative conclusion reached is that justice should be the value appeal and system ideal in risk responsibility undertaking.

Somaking it undertake the risk responsibility of breaking promise alone, which is not fair for it.

Discussion about the responsibility risk of supervisory engineer;

The research of the supervision company s responsibility risk;

This paper gives the author s knowledge from the actual works on how to accomplish the work as perfectly as possible and how to avoid work responsibility risks effectively.